Locking means for chin guard

Abstract

The present disclosure relates to a locking means for chin guard, and the locking means for chin guard according to the present disclosure is equipped in a helmet including a helmet body ( 10 ) and a chin guard ( 20 ) rotatably coupled to the helmet body ( 10 ), and includes a first fastening portion ( 100 ) formed in any one of the chin guard ( 20 ) and the helmet body ( 10 ), a second fastening portion ( 200 ) formed in the other one of the chin guard ( 20 ) and the helmet body ( 10 ), and into which the first fastening portion ( 100 ) is inserted, and a shutter portion ( 300 ) covering the second fastening portion ( 200 ), wherein when the first fastening portion ( 100 ) is inserted into the second fastening portion ( 200 ), the shutter portion ( 300 ) opens the second fastening portion ( 200 ).

1 . A locking means for chin guard equipped in a helmet including a helmet body and a chin guard rotatably coupled to the helmet body, the locking means for chin guard comprising:
 a first fastening portion formed in any one of the chin guard and the helmet body;   a second fastening portion formed in the other one of the chin guard and the helmet body, and into which the first fastening portion is inserted; and   a shutter portion covering the second fastening portion, wherein when the first fastening portion is inserted into the second fastening portion, the shutter portion opens the second fastening portion.   
     
     
         2 . The locking means for chin guard according to  claim 1 , wherein when the first fastening portion is inserted into the second fastening portion, the shutter portion is pressed by the first fastening portion, and moved in an inward direction of the second fastening portion. 
     
     
         3 . The locking means for chin guard according to  claim 2 , wherein an elastic force is provided to the shutter portion in a direction in which the shutter portion covers the second fastening portion. 
     
     
         4 . The locking means for chin guard according to  claim 1 , wherein the second fastening portion is recessed from one side of an outer surface of the helmet body, and
 wherein when the shutter portion covers the second fastening portion, an outer surface of the shutter portion is disposed corresponding to said one side of the outer surface of the helmet body.   
     
     
         5 . The locking means for chin guard according to  claim 1 , wherein the first fastening portion includes:
 a pressing portion to press the shutter portion to move the shutter portion in an inward direction of the second fastening portion; and   a first coupling portion that is fastened to the second fastening portion.   
     
     
         6 . The locking means for chin guard according to  claim 5 , wherein the pressing portion includes a second coupling portion that is fastened to the second fastening portion. 
     
     
         7 . The locking means for chin guard according to  claim 6 , wherein when one side and the other side of the second fastening portion face each other, the first coupling portion is fastened to one side of the second fastening portion, and the second coupling portion is fastened to the other side of the second fastening portion. 
     
     
         8 . The locking means for chin guard according to  claim 5 , wherein as the chin guard rotates, the pressing portion presses the shutter portion to move the shutter portion in the inward direction of the second fastening portion, and then the first coupling portion is fastened to the second fastening portion. 
     
     
         9 . The locking means for chin guard according to  claim 1 , wherein the first fastening portion includes a first coupling portion that is fastened to the second fastening portion, and
 wherein the first coupling portion is rotatably disposed in any one of the chin guard and the helmet body.   
     
     
         10 . The locking means for chin guard according to  claim 9 , wherein before the first coupling portion is inserted into the second fastening portion, the first coupling portion contacts the outer surface of the helmet body and rotates in one direction, and as the first coupling portion is inserted into the second fastening portion, the first coupling portion rotates in other direction. 
     
     
         11 . The locking means for chin guard according to  claim 10 , wherein an elastic force is provided to the first coupling portion in the other direction. 
     
     
         12 . The locking means for chin guard according to  claim 11 , further comprising:
 a decoupling means to pull the first coupling portion to rotate the first coupling portion in said one direction.